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1 definition by the cool breeze

 
1.
a mixture of a grundle grab and a knuckle butt fuck. it can be quite stimulating if used correctly
the wrestler used the grumpkin technique to score a reversal.
i blew my wad as soon as that filthy slut gave me a grumpkin.
מאת the cool breeze 7 בספטמבר, 2006
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